parenting little boys

Tweet

i Just gave birth to a baby boy 7 weeks ago. . I have noticed that he started to smile frequently at 4 weeks and i thought it was on purpose. but now that he's 7 weeks he smiles and i think it's at more distinctive things. i.e, the ceiling fan, the light on the ceiling, birds outside, windchimes. does anyone know if he is smiling on purpose or is it still just because? what is the right age that they learn that at?